The s90 appears to be a nice little camera, though I think the G11 will have better ergonomics (grip, ease of control, etc.) But the s90 is small and light.

I'm not sure how seriously Ken Rockwell's site is taken by most photographers. I certainly take a lot of it with a grain of salt (though there is some very funny stuff in there.)

Check dpreview, luminous-landscape.com, robgalbraith.com, etc. for more information.